wide pericarps, containing numerous large granules ; the cluster surrounded 
by several, longish, patent, spindle-form, involucral ramuli. Colour a dull 
red. Substance somewhat cartilaginous, not closely adhering to paper. 
POA 
The external habit of this species is so different from that of 
the other ciliated Ceramia that it can scarcely be confounded 
with any of them. It bears a much closer resemblance to a 
small specimen of C. rubrum, to which species there is much 
similarity both in the branching and im the length and struc- 
ture of the joints; but from which it may be at once distinguished 
under the microscope by the minute prickle with which each of 
the joints is armed at its outer edge. I believe that it was first 
discriminated by Mrs. Griffiths, who communicated specimens to 
Professor J. Agardh, from whom it received the name here 
adopted. It is by no means common, nor have I seen any 
British specimens except those collected by Mrs. Griffiths, and 
some for which I am indebted to Miss White, who gathered 
them in Jersey. Professor Agardh has obligingly sent me a 
specimen from the coast of Spam, which has all the essential 
characters of the British plant. Perhaps the most nearly allied 
species to C. flabelligerum is C. monile, a native of ‘Tasmania, 
whose joints are armed with similar prickles, but the general 
branching of the frond and its size are very different. 
Fig. 1. CeRAMIUM FLABELLIGERUM :—the natural size. 2. Part of the filament. 
3. Apex of a filament, bearing ¢e¢raspores. 4. Portion of a filament, with 
Javelle and involucral ramuli. 5. A prickle. 
